Remove unneeded dependency, forward declaration, and header include.

media/mojo/services/mojo_renderer_service.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_
 #define MEDIA_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/buffering_state.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline_status.h"
 #include "media/mojo/interfaces/media_renderer.mojom.h"
 #include "third_party/mojo/src/mojo/public/cpp/bindings/interface_impl.h"
 
 namespace mojo {
 class ApplicationConnection;
 }
 
 namespace media {
 
 class AudioRendererSink;
 class DemuxerStreamProviderShim;
-class MojoDemuxerStreamAdapter;

[wtc, 2015/02/10 22:02:01]

MojoDemuxerStreamAdapter is no longer used by this class.
(MojoDemuxerStreamAdapter is now used by DemuxerStreamProviderShim.)

 class Renderer;
 
 // A mojo::MediaRenderer implementation that uses media::AudioRenderer to
 // decode and render audio to a sink obtained from the ApplicationConnection.
 class MEDIA_EXPORT MojoRendererService
     : NON_EXPORTED_BASE(public mojo::InterfaceImpl<mojo::MediaRenderer>) {
  public:
   MojoRendererService();
   ~MojoRendererService() override;
 
@@ skipping 57 matching lines @@
 
   base::WeakPtr<MojoRendererService> weak_this_;
   base::WeakPtrFactory<MojoRendererService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoRendererService);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_